Starting means for internal-combustion engines.



G. J. COLEMAN. STARTING MEANS FOR. INTERNAL GOMBUSTION ENGINES.APPLICATION FILED 0017, 190a. EBNBWBD JULY 20,1912.

1,053,360, Patented Feb. 18, 1913.

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oiled Stales, residing at (11 eoimlv oi llloifris and v haw invenledcertain ,s in Starting: silomlinslioii lCYl1lZ1GSOf *1 v is aspecification, refer- :iccompaiiying mini: a part l'hcloof. i liinvention relates lo starting; means for l hi1. ion engines and has forits noliciiv of construction and posiiei'ation.

invention relief controlcil for ccmii'ol iiug oi v eezii mm "Hal ssui'oe1 ii -m,

J l i-esponsive l L A. pressure he engine to and responsive lo the-"iressure of the enof speed of the ed compression presiez'ez om s as torestrict the vent (hi? the compression stroke in direct: lfilitl-Tii)"lo the increase of speed mid thereby to increase lh osiehial charge asthe speed is a v onus rapidly and cumulatively to t-hs power and speed.of the my maximal corp Mullins: '1 whereby "the vent may prevent the a-laliic relisif cons-rolling; op-

My iiiveii Ell also includes various ire-- '"piovements the constructionand combination of s I will es'sriho the {levies illusiratec'l in thedraw emhocl vingfmy invention point out the. novel fealien, of relief,controlling; soon the valve chest of explosive engine. 2 is a riot-ailof a spider to be placed in go rec-oi the stem of fiche i: LEQTEXQ'G'HIEAIZ'EE INTEBNPaLGQMLBUBTZOIQ ENGINE$.

Letters Patent.

Foflenls Fel 1913.

tral longitudinal section of modified construction relief controllingmeans. 1

The relief controlling means comprises a relief cock 1 upon. the valvechest 18 of the engine and adapted to be manually operated, andautomatic relief controlling means conveniently mounted upon anextension of the casing'll of lhe valve cock. The aniomalic reliefcontrolling means comprises a double valve consisting of two oppositelyfacing valves and 31mm; the same valve stem 4:, the inner valve 2closing; outwardly a I1 jlllll outervalvc 3 closing inwardlyagainstproperly formed, seals in the valve plug" or tube 13, this valve plug ortube being threadccl into 'ihe vent orifice of the Q00 The valve stem lis guided at its inner end in a spider 10 and is guided anti conlrolleclat its enrl in an ail iissi nut 8 lm'eaclecl upon the outer pal-l of thecasing and this spring" exiTBTHlS outwardly along the casing; in helicalform to the coal ofllhe casing we extends invvardl 1'20 "the valve stemin spiral form valve in open position against the compress sion pressureof the engine when the engine 1s storied but has not suilicmnt resistingexplosion or combustion oressure of the engine. This spring isavijustahle by means of the holding not 8 and the stem 4 of hecontrolling valve, between "the outer valve 3 and a guide plate 6secured to the spring: 7, is arranged a. light helical spring whichholds the elite? valve normally closecl but which yields to thecompression pi'essl'ire of the engine to permit ihe gaicle plate 6(luring such movement This lightspring 5 is however very nearly orci'impletsly compressed, by the compression pressure so that under theheavier exconveys the pressure of the valve to the strxqngeii'sprmgllormall y' the light spring 5 WLll hokl she tion? as is is termedvyhich will press the outer valve tightly against llIS seal? sad 9:?

outer end by a combiiiicd spiral anal helical spring 7, thzsspringb91115; held at its inner.

and has sufiicieiit resisling power to holcl the the valve lie open thevalve stem 4; sliolihg losion or combustion pressureil; merely out-ervalve closeel, but in. the chai ging sti0l e of the engine there Will bea preponderance of external prcssurcror a f suc-= power to hold thevalve open against the I lock mil 9. On

ifs slushy provost the wealsehm of tho' 2 v r I 1,063,860

charge by the entrance of air at the relief vent, Durin the compressionstroke of the engine t einternal pressure will be sufiicient to compressthe light spring 5 and thereby cause the outer valve to be opened untilthe resistance of the strong spring7 is encountered, and this resistanceas aforesaid will be suflicient to prevent such further movement of the.valve as would result in closing the inner valve 2 and the vent orificewill therefore be opened during'the compression strok' eof the engineand will relieve the compression as is desirable in the startingoperation. Upon the ignition of the resi a'l charge the explosion orcombustion will be s'uflicient to overcome the strong spring 7 and toclose the inner 'valve andithereby to confine the explosion and permitits full utilization 'in driving the engine. The valve openingor vent isrestricted by a seat'plug. 13 and as the speed of the engine lncreasesunder the successive explosions of the residual charges, the internalpressure of compression upon the rellef controlling valve will increaseso as to cause a further outward movement there-' of, either by movementof the strong spring 7 or greater compression of the'light spring.

5, and this will result in a further restriction of the vent orifice,permitting a large portion'of the charge to remain in the engineso thata greater explosive force may be developed, and thus, cumulatively, the

. increased speed will build up a greater retention' of the charge and aheavier explo-- sion, and evidently by...proper'adjustment, of the ventarea and the resilient means,

"this increased retention of the charge may when the normal speed of theen ine is atthe norm ne be continued to the point of very nearly orsubstantially retaining the entire I charge Upon the attainment o I malspeed, the operator should close the 'coclg; 1, thereby altogether.closing the vent and discontinuing the automatic operation of'the reliefcontrollin means.

My 'improved relie controlling means maybe used in connection with astarting motor or power device or may bfeused in connection with amanual starting operation by means of a'crank or strap or othernon-automatic device.

In the modified construction-shown in Fig. 3, the valves-and seats arereversed, a double valve 15 being arranged so as to close nwardly uponan inner seat 16 formed in-the' casing and to close outwardly upon plug19 projects out o "an outer seat in seat fplug 19. This seat an armcarrying asingle flat controlling spring 20, this flat controllingspring being of about the same resisting powervas the strong spring 7 ofthe constructionjshown in Fig. 1. The valve stem 21 has a limited freemovement relatively to the s'pringZQ, 'govthe casing and has "aboveparticularly described within the spirit and scope of my invention.

I claim 1. Relief-vent controlling means for internal combustion enginescomprising a casing having a vent therein, a valve movable inward andoutward and arranged to close the vent in-either extreme. position, apart adjustably fitted in the casing having valveseats for such valve,and a sprin located outside the casing and controlling t e valve.

2. Relief-vent controlling-means for in ternal combustion enginescomprising 9. casing having a vent therein, a valve movable inward andoutward and arranged to close the-vent in either extreme position, suchvalve having faces converging-with respect to each other, a removablepart fitted in the casing having valve seats for such valve, anda'spring located outside thecasing and controlling the valve. y

' 3. Relief veht controlling means for internalcombustion enginescomprising a 0115- ing having a vent therein, a valve movable inward andoutward and arran ed to close the vent-in either extreme'position, and aspring controlling the valve and having a spiral part at the end-of thecasing and a helical part exteriorly encirclingthe casing,-

such spiral part providing a guiding means for the valve stem.

4. Relief vent controlling means for internal combustion enginescomprising a casing having a vent therein, a valve movable inward andoutward and arranged to close the vent in either extreme position,'aspring controlling the valve, ,suc'h spring havlng a helicaljpartexteriorly encircling the casing and a spiral part at the end of thecasing,

the spiral part being adapted to. provide .a guiding means for the valvestem, and adjusting means exteriorly threaded on the casingand'controlling the spring, substantially as set forth.

- 5. Relief vent controlling means for internal combustion enginescomprising 9. casmg having a vent therein, a valve movable inward andoutward and arranged to close the vent in either extreme position, apart adjustably fitted in the casing havin valve seats forthe valve, anda spring ocated oiiteide the casing and controlling the valve andarranged to hold such valve normally yleldingly in theficlosed position.

6. Relief controlling means for internal combustion engines comprising acasing having a vent, a valve and a spring at the outer n of the ventbearing against and controlling such valve and partially closing saidve11't,' ,whereby to restrict the passage of a charge therethrough.

7. Relief controlling means for-internal combustion engines comprisinga. casing having a vent, the atmospheric end of the vent bearing againstand controlling such valve and partially closing said vent, whereby torestrictthe passage of a charge therethrough.

8. Relief controlling means for internal combustion engines comprising acasing havf-1' Wilt, a valve and pressureresisting means at the outeropening of the'vent con- "trolling such valve and guided on the outersurface of the casing. 9. Relief vent controlling means for internalcombustion engines comprising a casing having a vent therein, a valvemovable inward and'outward and arranged to closev the vent in-eitherextreme position, and a retractive member at the outer end of the ventarranged to guide and control the movementot the valve. 1

a valve and a helical spring at I 10. Relief controlling means forinternal combustion engines comprising a casing having a vent, a valvehavlng an intermediate open position and movable inward and out wardfrom such open position to close the vent and freely movable from theintermediate. to the inner position, and pressure resisting meanssecured to a part of the casing and arranged to control and guide suchvalve fromthe intermediate to the outer position. I I

11. Relief vvent controlling means for internal combustion enginescomprising a casing ha-Vinga vent therein, a valve movable inward anoutward and arranged to close the vent in either extreme posit-ion,aspnng at the end of the valve stem adapted to hold the closed position,and a second spring at the end of the vent the valve normally in adaptedto control the valve and to permit the movement of the valve from themiddle tothe extreme outward position upon the attainment of apredetermined pressure.

'In testimony whereof I have aflixecl my signature in presence of twowitnesses.

CLYDE J. COLEMAN.

Witnesses:

, HENRY BARNES,

HENRY D. WILLIAMS.

